Study on Temperature-Dependent Changes in Hydrogen Bonds in Cellulose I by Infrared Spectroscopy with Perturbation-Co
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- 作者：Akihiko Watanabe ; Shigeaki Morita ; Yukihiro Ozaki
- 刊名：Biomacromolecules
- 出版年：2006
- 出版时间：November 2006
- 年：2006
- 卷：7
- 期：11
- 页码：3164 - 3170
- 全文大小：248K
- 年卷期：v.7,no.11(November 2006)
- ISSN：1526-4602
文摘
Infrared (IR) spectra were measured for cellulose I
prepared from the mantle of Halocynthia roretzi over atemperature range of 30-260 
C to explore the temperature-dependent changes in hydrogen bonds (H-bonds) inthe crystal. Structural changes at the phase transition temperature of 220 C are elucidated at the functional grouplevel by perturbation-correlation moving-window two-dimensional (PCMW2D) correlation spectroscopy. ThePCMW2D correlation spectra show that the intensities of bands arising from O3-H3···O5 and O2-H2···O6intrachain H-bonds dramatically decrease at 220 C, whereas the intensity changes of bands due to interchainH-bonds are not observed adequately. These results suggest that the phase transition is induced by the dissociationof the O3-H3···O5 and O2-H2···O6 intrachain H-bonds. However, the interchain H-bonds are not so muchresponsible for the transition directly.
prepared from the mantle of Halocynthia roretzi over atemperature range of 30-260 C to explore the temperature-dependent changes in hydrogen bonds (H-bonds) inthe crystal. Structural changes at the phase transition temperature of 220 C are elucidated at the functional grouplevel by perturbation-correlation moving-window two-dimensional (PCMW2D) correlation spectroscopy. ThePCMW2D correlation spectra show that the intensities of bands arising from O3-H3···O5 and O2-H2···O6intrachain H-bonds dramatically decrease at 220 C, whereas the intensity changes of bands due to interchainH-bonds are not observed adequately. These results suggest that the phase transition is induced by the dissociationof the O3-H3···O5 and O2-H2···O6 intrachain H-bonds. However, the interchain H-bonds are not so muchresponsible for the transition directly.